精彩を欠く せいさいをかく Also written 生彩を欠く Meanings Expression, Godan verb to lack luster; to be dull; to be unimpressive; to be off form; to be sluggish; to be lethargic Kanji 精 spirit. Read as セイ. 彩 coloring. Read as サイ. 欠 lack. Read as かく. Jinuma: Japanese Dictionary · Word lists